521253292 has 24 divisors (see below), whose sum is σ = 1044884736. Its totient is φ = 222884688.

The previous prime is 521253283. The next prime is 521253307. The reversal of 521253292 is 292352125.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8608 + ... + 33415.

It is an arithmetic number, because the mean of its divisors is an integer number (43536864).

Almost surely, 2^521253292 is an apocalyptic number.

It is an amenable number.

521253292 is an abundant number, since it is smaller than the sum of its proper divisors (523631444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521253292 is a wasteful number, since it uses less digits than its factorization.

521253292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42477 (or 42475 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 521253292 is about 22830.9722088219. The cubic root of 521253292 is about 804.7906774140.

The spelling of 521253292 in words is "five hundred twenty-one million, two hundred fifty-three thousand, two hundred ninety-two".